Article ID Journal Published Year Pages File Type
5450385 Progress in Natural Science: Materials International 2016 5 Pages PDF
Abstract
This paper reports the synthesis of neodymium substituted bismuth titanate nanoparticles (BNdT) for ferroelectric random access memory (FeRAM) based applications using sol-gel route. X-ray diffraction pattern showed that the BNdT nanoparticles exhibited perovskite structure with orthorhombic phase. The microstructure of the BNdT nanoparticles showed that the grains were in spherical structure with a bi-modal distribution of spheres. Dielectric constant and dielectric loss of BNdT nanoparticles were measured in the frequency range 100 Hz to 100kHz. Nd-substituted BNdT nanoparticles showed the high remanent polarization (Pr=33.2 μC/cm2, Ec=62.5 kV/cm) than pure bismuth titanate (BT) (Pr=14.6 μC/cm2, Ec=182.8 kV/cm) ideal for FeRAM based applications. The occurrence of red shift in photoluminescence (PL) spectrum is considered to be due to the isomerisation that may occur from the heating of samples.
Related Topics
Physical Sciences and Engineering Materials Science Electronic, Optical and Magnetic Materials
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